[ Grammar ]
Choose the correct word or word pair that completes the sentence.
I ________________ called the airport earlier.
_____
A. could have
B. could of

Random Topics:
Simple TensesGrammar : can, could and be able toPassive Voice, Question Tag, PrepositionsIF CLAUSEPast Simple, Present Perfect TenseSimple Past TensesUnless If First ConditionalOffering HelpGrammar ( going to)Modal VerbsOther quiz:
Grammar › ViewYou ____ exercise more if you want to lose weight.
A. could
B. should
C. would
Comparisons › View
Everest is………(high) mountain in the world.
A. highest
B. the highest
C. high
D. higher
Grammar › ViewIt _______________ that the company is planning a new advertising company.
A. is thought
B. is been thinking
C. will be thought
D. would be thought
Gerunds and Infinitives › View
Jennifer has helped her mom _____________ the holiday trip of the family many times
A. to plan
B. planning
